Kimi K3 vs GPT-5.6 Sol: Cost and Performance

Kimi K3 and GPT-5.6 Sol have been compared on the DeepSWE benchmark, revealing unique strengths for each model. GPT-5.6 Sol leads in single-attempt quality with a pass@1 score of 72.7%, while Kimi K3 excels in scenarios with multiple attempts, achieving a pass@4 score of 89.4%. Kimi K3 is also more cost-effective, providing 2.8 times more solved tasks per dollar than Sol. The models' differing strengths suggest that using a routing strategy, where tasks are first attempted by Kimi K3 and escalated to Sol if necessary, could optimize performance and cost-efficiency.